Holley VR2 - Advanced EFI Control Logic; Service Parts and Accessories

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In this more advanced example, the pump would run at 50% duty cycle as long as:
1. Nitrous is NOT enabled
OR
2. TPS is between 0 and 50%
In this example, the pump would run at 100% duty cycle as soon as a Water/Meth solenoid is turned on:
The same type of logic could be applied to operate the Dual BLDC pumps in the following configurations:
 Pump 1 at 50% -- Pump 2 off
 Pump 1 at 100% -- Pump 2 off
 Pump 1 at 100% -- Pump 2 at 50%
 Pump 1 at 100% -- Pump 2 at 100%
For more setup up options, refer to the instructions with your Holley EFI system or contact Holley Tech Services.
SERVICE PARTS AND ACCESSORIES:
ITEM
PART NUMBER
Chevy Small Block Mechanical Pump Block-Off Plate
12-814
Chevy Big Block Mechanical Pump Block-Off Plate
12-813
0-15 PSI Fuel Pressure Gauge (non-liquid filled) 1-1/2” Dia. 1/8” NPT
26-500
0-30 PSI Fuel Pressure Gauge (non-liquid filled) 1-1/2” Dia. 1/8” NPT
26-502
0-15 PSI Electric Fuel Pressure Gauge (dash mount)
26-503
0-15 PSI Fuel Pressure Gauge (liquid filled) 1-1/2” Dia. 1/8” NPT
26-504
0-30 PSI Fuel Pressure Gauge (liquid filled) 1-1/2” Dia. 1/8” NPT
26-505
0-160 PSI Fuel Pressure Gauge (liquid filled) 2” Dia. 1/8” NPT
26-506
30AMP Fuel Pump Relay Kit
12-753
90 Elbow for Attachment to Holley Fuel Line
26-69
Safety Shut Off Switch
12-810